Shock absorber



' 1,631,569 June 7 9 1927. r L. ALDRIN v SHOCK ABSORBER Filed Oct. 9, 1925 156/)44/70 fip/P/A o@ o k z/ INVENTOR.

h & l I q E7 ATTORNEY.

Patented June 7, 1927- s ares L ONARD ALDRIN, or DENVER, COLORADO.

. snoox ABSORBER.

This invention relates toa shock absorbing device for vehicles to be used in connection with the present spring suspension of the' vehicle .and has for its principal 0b ect the exert a relatively greater dampening action upon-the rebound or upward movement.

Another-.ob ect of the HIVBIItIOIl is to provide device of this character which will 7 .act directly between the bodyand the car axles and will not interfere with, or throw additional stresses upon the spring structure. I

7 Still another object is to so construct the invention that itcan be readily attached to the present vehicles without it being neces sary to alter any of the present construction, and without the necessity of drilling or tapping any-additional holes in the vehicle.

A further. object is to. apply a device of this character to a vehicle without it, causing any tendency to allow lateral sway of the body uponthe running gear.

i A still further object isto provide a shoe absorber whichwill resist tilting or rocking of the body upon the'running gear.

Other objects and advantages reside in the detail construction of the lnvention, whlch is designed for simplicity, economy, and efv ficiency, These Wlll become more apparent from the followin descri tion.

In the'following detailed description of the invention reference is-had to the accompanying drawing which forms a part hereof.

Like numerals referto like parts in all views .of the drawing and throughout the description p In the, drawing: 7

designated as follows: front axle 6, front.

spring 7, front chassis support 8, rear axle .Fig. 1 illustrates a front elevation of the front axle of an automotive vehicle.

Application filed October 9, 1925 Serial No.; 61,465. I if k 30, rear' spring 31., and rear chassis supp0rt25. 1 I The; shocks are absorbedithrough jthe medium of p horizontal;cylinders On the rear axle' of the vehicle. I employ two such. cylinders, 10, similar in construction, secured to the axle by clamp bolts 31. .Eachcylin- 'der 10 is provided witha piston provided with a compression washer 12 andcarried ,v v

on a piston rod 13 which extends through a packing gland lt inthe head of'tl elcyliir der 10.

A pivot bracket 15.is, forni ijihg gmny with the head 1610fthe cylinderlO and carries a pivot pinv 1 7, A bellcrank lever:l8 is maintainedjupon the pivot 17, the'idowm wardly extcndingfarm 19 of which engages the extremity of the piston rod 13' as illustrated in Fig. 3. This engagement is maintained by'forming a bifurcated extremity20 .uponthe piston rod, in which, anharcuate surface'21 and a pin 22 contact withopposite sides of the arm 19.. Bythis arrange pling 27 through" the medium of of-the bell crank lever 18.

As thepiston movesthe cylinderfjithe- 5 vfluid ahe adro'fthe piston will pass through ports 28 formed in" the piston to j fill'the increasing spacein the rear thereof. The size 1 of dampening action desired.

It is more essential in a device of this character that the rebound or upward move ment of the body'be resisted, since this movementpthe vertical movement of the extremi- I i ,ity of the arm 19 is provided for. -The'long 1 arm of the .bell-cranklever extendssubstanwith Which the cylinderis filledf; The fluid is introduced through a compression c011 1 x; usual grease "guns at-present' employed] for. 1 greasing automobiles. jMovement is im-.

parted to; the piston the variationsfin'. distance between the vehicle body and the axle 1 I h O lg V the medium ofthe link 23 allottile. 9 i

ment is the one which'cau-ses discomfort to the passengers. Tov provide this increased resistance toupward movement, I install a spring 29 between the piston 11 and the cylinder head 16. Since upward movement i of the ports 28 is determined by the amount I of the body causes the piston to move toward the cylinder head, this upward movement ,Will be resisted by both ,the spring 19 and the flow of the fluid through the ports 28,

While downward movement will only be resisted by the fluid.

On the front axle 6 of the vehicle,I pro-dv vide a common cylinder 82, illustrated in cross, section in Fig. 4. In the cylinder v32 are two pistons 33 having oppositely extending piston-rods 3a which project through vpacking glands, 35 at each extremity of the cylinder. The piston rods 3 are operated by an operating mechanism similar in construc'tion to that previously described with reference to" the rear axle. In this case, liowever ,ftlie U-bo-ltsQB and the attachment clips'24' are secured to the front chassis in'ein her 8." Tl1e cylinder is filled with fluid through compression coupling 36 in h the case of the cylinder 10, -A spring 37*is interposed between the two pistons 33-.

' Asfthebody of the vehicle moves upward with rela ion was axle e, the ten crank levers 18 will cause the tWo pistons 33 to ap- 1 preach each other; This movement is repistons 33.

gsist'ed'by the spring 37 so as to cheek the rebound. The movement of the pistons is also resisted as in the previous case, by the flow of the fluid through the ports 28: in both the The usual front axle G'has an I-bea1n cross section. To securely clan'ip the cylinder to the axle, I provide a bracket 38 having a adaptedio fit into the forward side f, h v saandp de w h a mois ing ton'guejj39 which rests upon the axle 6 Y 7 *antlazsiipports th e weight oi? the device. 7 The 1' bracket 38 has an upwardly extending porwhichcai ries a pivot shaft 4Oifor t'he'b'ell "crank im -1s. A clamp sl -is pro- 1 videdjhavingf'a contour to fi to fear i'side hfthe' I-be'ani," The bracket 38 the np' llzare'elaniped together by means of elampfbolts 42;'so as to snugly enclose the Whi1e*a -sjecifi form of the improvement 1 spirit oftlie invention.

- nae d has been described I and j illustrated herein, "it

desired jto beunderstood that the same may be" varied, within the seope of the appended claims, without "departingffroin the esired to call attention to the fact that; thei e is no direct upward "lift ordoWnward drag on the axle, inasmuch as the resistance of the cylinders is horizontally applied and the body action is vertically applied, the resultant force on the-fulcrum -a t 0 e45", angle Types of snubbers at present on the market at times act to lift the wheels from the ground thereby causing great wear and tear on the tires; This action is ellminated 1n the present device.

l claim and desire secured by Letters Patent is Having thus described the invention what a 1. A shock abso'rber'fora vehicle comprising a cylinder arranged for 'attachnientto the axle of said vehicle; opposed pistons carried ,in said cylinder; piston rods 'ar ranged to project from opposite ends of said cylinder; bell crank levers arranged i01 attachment to the bodyio'f said vehicle at their one extremity and operatively connected to said piston rods at their ethereatreinity so as to cause said pistons to ap-.

preach each othen'as fsaid body moves iipv V I arranged to fit'against the opposite face of said axle; and means for drawing said clamping member toward said frame;'a cylinder carried by said frame; a bell crank carried by said frame a connection between said vehicle and one extremity of saidfbell' crank; and a piston in said ,cyllnde'r oper'a tirely connected "to the of said bellci-ahk. '3. Thecoinbination in opposite extremity a vehicle haying a leaf spring parallel to and conne'e'ted with,"

an axle, ot a name secured to saidaxle; a

-oylinde'r carried by said frame; a bellc'rank carried by said frame; a connection between said vehicle and'one'extreniity of said bell crank; a piston in saidjcylinder o'perativ'ely V "connected to the opposite extremity of'sa-id bell crank; a spring,a-rranged ,to becompressed by said piston as said vehicle moves away from said axle; and passages arranged to allow fluid to pass thi'oughqs'aidpiston as said vehicle approach-es said axle.-

In testimony whereof, I afiix my sign ture. V

LEONARD ALDRTN. i 

